On this page, you will find the official link to download Micromax A66 Stock Firmware ROM (flash file) on your Computer. Firmware comes in a zip package, which contains Flash File, Flash Tool, Driver and How-to Manual.
Download Micromax A66 Stock Firmware (flash file)
File Name: Micromax_A66_V21_20140326.zip
File Size: 217 MB
How to Flash: